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. 2012 Mar 7;7(3):e32539. doi: 10.1371/journal.pone.0032539

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Shen et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The transmission efficiencies were calculated as the percentage of the viral load in the inoculums that were transmitted across cervical mucosa. X axis denotes the isolates (co-receptor usage indicated in the parenthesis) used in this study while Y axis denotes the percentage of the transmission. Data shown here is the average of 3 biopsies with standard error. Isolates are grouped as chronic isolates and transmitter/founders.